| Year | 1994 |
| Date | 04-Mar |
| Volume | 172 |
| Issue | 3,964 |
| Page | 282 |
| Category | Exhibition |
| Part | |
| Title | International 63rd Model Engineer and Modelling Exhibition. Hot Air Engines - Class A1 |
| Author | David C.Ayers |
| Notes | David Ayres' Ringbom engine & Gnat power engine, Julian Wood, Mick Collins, Peltier effect "Gnat Power" engine by Mike Symes, |